Bleeding 13 days before period! Pregnant or something seriously wrong?!

Im in dying need for some answers and unfortunately I've been to 6 different clinics but every place tells me that I cannot get in to see a doctor because they aren't accepting new patients. Still on the hunt though and if no luck in a few days I will just go to a walk-in clinic (not sure how serious this situation is)! I normally have a 28 day cycle with the acception of it being either a couple days early or a coulpe days late from time to time. I just finished my period on June 30 and my ovulation date was around July 10 (according to a period tracking app). Well, my boyfriend and I had intercourse that night and right after we were done I had really bad "period-like" cramping along with some nausea but it only lasted about 10 mins. We thought that maybe he had hit the cervix but didnt really think much of it as the pain stopped and nothing further happened. However, the day after (July 11) around 5-6 at night I went to the bathroom and noticed there was some pink when I wiped. Then on July 12 I experienced some more cramping and assumed that my period was coming but again I only had some light red bleeding but not heavy bleeding (spotting, i think? i've never had spotting before). This spotting has lasted seven days now and not sure when it will end. It cant be my period because my period isn't expected until July 24 which would mean that it came 13 days early and in all the years I've had my period for this has never happened! I'm so confused! My period usually starts with severely painful cramps for the first two days, sore breasts, and a heavy flow. It lasts for 5 days. I haven't experienced symptoms like tender breast or any changes in sleeping. The only thing I can think of is a bit of nausea. I read that it might be implantation bleeding or ovulation bleeding (NEVER experienced that before) but im not sure? I'm pretty worried that maybe something could be seriously wrong. I need help :( :( Thanks